package edu.gdkm.extendsdemo;

public class Test {
    public static void main(String[] args) {

        final double PI = 3.141592653579793;

        System.out.println(Integer.MAX_VALUE);



        Teacher teacher = new Teacher();
        teacher.setId("100");
        teacher.setName("张三");
        teacher.say();


        Teacher teacher1 = new Teacher("101","张四");



        Student student = new Student();
        student.setId("30000");
        student.setName("李四");
        student.say();
        Staff staff = new Staff();
        staff.setId("2000");
        staff.setName("王五");
        staff.say();

        Student student1 = new Student();
        student1.say();
        Student student2 = new Student("300002");
        student2.say();
        Student student3 = new Student("300003","李五");
        student3.say();

//        final int a=1;      //final 修饰的变量 为常量，即不能更改该符号代表的内容
//        a=2;
    }
}
